Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Comparator + lock Complementary, TTL uMAX 8

General Description

The MAX913 single and MAX912 dual, high-speed,

low-power comparators have differential inputs and

complementary TTL outputs. Fast propagation delay

(10ns, typ), extremely low supply current, and a wide

common-mode input range that includes the negative

rail make the MAX912/MAX913 ideal for low-power,

high-speed, single +5V (or ±5V) applications such as

V/F converters or switching regulators.

The MAX912/MAX913 outputs remain stable through

the linear region. This feature eliminates output instabili-

ty common to high-speed comparators when driven

with a slow-moving input signal.

The MAX912/MAX913 can be powered from a single

+5V supply or a ±5V split supply. The MAX913 is an

improved plug-in replacement for the LT1016. It pro-

vides significantly wider input voltage range and equiv-

alent speed at a fraction of the power. The MAX912

dual comparator has equal performance to the MAX913

and includes independent latch controls.

Applications

Zero-Crossing Detectors

Ethernet Line Receivers

Switching Regulators

High-Speed Sampling Circuits

High-Speed Triggers

Extended Range V/F Converters

Fast Pulse Width/Height Discriminators

Features

♦ Ultra Fast (10ns)

♦ Single +5V or Dual ±5V Supply Operation

♦ Input Range Extends Below Negative Supply

♦ Low Power: 6mA (+5V) Per Comparator

♦ No Minimum Input Signal Slew-Rate Requirement

♦ No Power-Supply Current Spiking

♦ Stable in the Linear Region

♦ Inputs Can Exceed Either Supply

♦ Low Offset Voltage: 0.8mV

♦ Now Available in a Small µMAX Package

MAX912/MAX913

Single/Dual, Ultra-Fast, Low-Power

Precision TTL Comparators

________________________________________________________________ Maxim Integrated Products 1

GND

LEV-

QIN+

IN-

V+

DIP/SO/µMAX

TOP VIEW

MAX913

GND

LEB

N.C.

V+

INB-

INB+

MAX912

DIP/NARROW SO

GND

V-

LEA

N.C.

INA-

INA+

Pin Configurations

Ordering Information

19-0157; Rev 2; 8/03

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART TEMP RANGE PIN-PACKAGE

MAX912CPE 0°C to +70°C 16 Plastic DIP

MAX912CSE 0°C to +70°C 16 Narrow SO

MAX912EPE -40°C to +85°C 16 Plastic DIP

MAX912ESE -40°C to +85°C 16 Narrow SO

MAX913CPA 0°C to +70°C 8 Plastic DIP

MAX913CSA 0°C to +70°C 8 SO

MAX913EPA -40°C to +85°C 8 Plastic DIP

MAX913ESA -40°C to +85°C 8 SO

MAX913EUA -40°C to +85°C 8 µMAX

Summary of content (11 pages)

PAGE 1
9-0157; Rev 2; 8/03 Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators Features ♦ Ultra Fast (10ns) ♦ Single +5V or Dual ±5V Supply Operation ♦ Input Range Extends Below Negative Supply ♦ Low Power: 6mA (+5V) Per Comparator ♦ No Minimum Input Signal Slew-Rate Requirement ♦ No Power-Supply Current Spiking ♦ Stable in the Linear Region ♦ Inputs Can Exceed Either Supply ♦ Low Offset Voltage: 0.
PAGE 2
MAX912/MAX913 Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators ABSOLUTE MAXIMUM RATINGS 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW 8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)842mW 16-Pin Narrow SO (derate 8.70mW/°C above +70°C) .696mW Operating Temperature Ranges: MAX91_C_ _ ...........................................................0°C to +70°C MAX91_E_ _........................................................
PAGE 3
Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators V+ = +5V, V- = -5V, VQ = 1.4V, VLE = 0V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 4
Typical Operating Characteristics (V+ = +5V, V- = -5V, VLE = 0V, CL = 15pF, TA = +25°C, unless otherwise noted.) 8 tPD+ tPD- 18 16 14 12 10 tPD+ 8 6 tPD- 14 VOD = 10mV 12 10 PROPAGATION DELAY vs. TEMPERATURE Q OUTPUT tPD- 7 1.4 1.2 5 TA = +25°C TA = -40°C 20 40 TEMPERATURE (°C) 60 0.2 3 80 4 OFFSET VOLTAGE vs. TEMPERATURE 400 300 200 -20 0 20 40 TEMPERATURE (°C) 60 80 2 3 4 5 6 V- (V) INPUT BIAS CURRENT vs. TEMPERATURE OUTPUT VOLTAGE vs. DIFFERENTIAL INPUT VOLTAGE 2.
PAGE 5
Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators POSITIVE-TO-NEGATIVE PROPAGATION DELAY NEGATIVE-TO-POSITIVE PROPAGATION DELAY INPUT 100mV/div INPUT 100mV/div OUTPUT Q OUTPUT Q 1V/div 1V/div Q Q 5ns/div 5ns/div MAX912/MAX913 RESPONSE TO 50MHZ (±10mVP-P) SINE WAVE INPUT 10mV/div OUTPUT Q 2V/div 10ns/div MAX912/MAX913 RESPONSE TO SLOW-MOVING TRIANGLE WAVE INDUSTRY-STANDARD 686 RESPONSE MAX912/MAX913 RESPONSE INPUT 20mV/div INPUT 20mV/div OUTPUT Q 1V/div OUTPUT Q 1V/div Q 1V/di
PAGE 6
Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators MAX912/MAX913 MAX912 Pin Description PIN NAME FUNCTION 1 QA Comparator A TTL Output 2 QA Comparator A Complementary TTL Output 3, 14 GND Logic Ground. Connect both GND pins to ground. 4 LEA Comparator A Latch Enable. QA and QA are latched when LEA is TTL high or floating. Comparator A latch is transparent when LEA is low. 5, 12 N.C. No Connection. Not internally connected. 6 V- Negative Power Supply.
PAGE 7
Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators The MAX912 (dual) and MAX913 (single) high-speed comparators have a unique design that prevents oscillation when the comparator is in its linear region. No minimum input slew rate is required. Many high-speed comparators oscillate in the linear region, as shown in the Typical Operating Characteristics’ industry-standard 686 response graph. One way to overcome this oscillation is to sample the output after it has passed through the unstable region.
PAGE 8
MAX912/MAX913 Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators Applications Information Power Supplies and Bypassing The MAX912/MAX913 are tested with ±5V power supplies that provide an input common-mode range (VCM) of 8.7V (-5.2V to +3.5V). Operation from a single +5V supply provides a common-mode input range of 3.7V (-0.2V to +3.5). Connect V- to GND for single-supply operation. The MAX912/MAX913 will operate from a minimum single-supply voltage of +4.5V.
PAGE 9
Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators 8 INCHES DIM A A1 A2 b E ÿ 0.50±0.1 H c D e E H 0.6±0.1 L 1 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.014 0.010 0.007 0.005 0.120 0.116 0.0256 BSC 0.120 0.116 0.198 0.188 0.026 0.016 6∞ 0∞ 0.0207 BSC 8LUMAXD.EPS 4X S 8 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 5.03 4.78 0.41 0.66 0∞ 6∞ 0.
PAGE 10
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .
PAGE 11
Single/Dual, Ultra-Fast, Low-Power Precision TTL Comparators PDIPN.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.